I referred both the books for my SCEA PartI and if somebody wants to choose from the above two books for a quick learning, I will go with Head First Design pattern. [ September 10, 2007: Message edited by: Sasikumar Rohitasha ]
I have refered head first.I would advice you to refer the core java patterns by deepak alur.This was the book that helped me to understand design patterns in a more detail.